I have problems with praying too, at times, so I understand where you're coming from. What I do is like dGirl1986 - I just address God like a friend. I figure that He knows me better than anyone else, and so He will understand. He just wants me to talk to Him and get to know Him better and listen to Him.
Also, there are times when I can't put what I'm feeling into words, so I just throw the emotions at God and hope He can sort them out - I think He's big enough and strong enough to be able to handle anything I can throw at him. I literally just let my emotions carry my prayers, and there will be very few words, if any - just a feeling of complete gratitude and thankfulness, or of terror and fear and needing help, or of confusion. He knows me and He loves me enough to hold me through those prayers when I'm so upset.
That's how I deal with praying. I can't do the formal prayers like a lot of people. I don't feel like I really connect to God that way.
So... I hope this helped some.